Abstract
Degradation of organic pollutants in wastewater was investigated by photocatalysis method using anatase modification of titanium-dioxide (TiO2) catalyst with different structures. Laboratory experiments were carried out with industrial wastewaters consisting of different contents of organic pollutants. Two types of TiO2 catalyst: TiO2 having a size near to nanoparticles (about 3 - 4 micron in size) and the nanostructured 15 nm sized TiO2 were used to find optimum conditions of photocatalytic degradation and removal of organic compounds from wastewater. This paper discusses the effect of various parameters on the degradation rate including the catalyst concentration, process duration as well as the catalytic effectiveness of the TiO2 particles’ size. In addition, the effect of UV and visible light sources on the degradation process was studied. The process performed with nanostructured TiO2 catalyst under visible light was very successfully allowing best degradation of organic compounds.
Highlights
IntroductionToxic organic compounds contribute significantly to the environmental pollution in industrially developed regions
The environmental impact of industrial operations causes serious concern worldwide
The detoxification and removal of organic compounds in wastewater were investigated by photocatalysis method using two types of TiO2 catalyst
Summary
Toxic organic compounds contribute significantly to the environmental pollution in industrially developed regions. They are the most priority pollutants because of their toxic effect on the ecosystem components and high migration ability. The Absheron Peninsula of Azerbaijan is characterized with acute environmental situation. All the mentioned make important carrying-out researches to develop and apply advanced water treatment technologies capable of decontaminating hazardous pollutants
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